Hwang, Euyheon - Revision history

Mahnsoo.Choi: Protected "Hwang, Euyheon" ([Edit=] (indefinite) [Move=] (indefinite))

2016-01-04T08:07:25Z

Protected "Hwang, Euyheon" ([Edit=<protect-level-committee>] (indefinite) [Move=<protect-level-committee>] (indefinite))

← Older revision	Revision as of 08:07, 4 January 2016
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Mahnsoo.Choi at 08:07, 4 January 2016

2016-01-04T08:07:05Z

← Older revision		Revision as of 08:07, 4 January 2016
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	[[Category:Speakers]]		[[Category: Speakers]]
			[[Category: Condensed Matter Speakers]]
	* Professor at SKKU Advanced Institute of Nanotechnology and in the Department of Physics, Sungkyungkwan University		* Professor at SKKU Advanced Institute of Nanotechnology and in the Department of Physics, Sungkyungkwan University
	* PhD from University of Maryland at College Park		* PhD from University of Maryland at College Park

Mahnsoo.Choi at 05:11, 14 October 2015

2015-10-14T05:11:27Z

← Older revision		Revision as of 05:11, 14 October 2015
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	* Professor
	* SKKU Advanced Institute of Nanotechnology
	* Department of Physics, Sungkyungkwan University
	[[Category:Speakers]]		[[Category:Speakers]]
			* Professor at SKKU Advanced Institute of Nanotechnology and in the Department of Physics, Sungkyungkwan University
			* PhD from University of Maryland at College Park

	==Contributions==		==Contributions==
	# [[Carrier screening and transport in novel chiral 3D Dirac materials]]		# [[Carrier screening and transport in novel chiral 3D Dirac materials]]

Mahnsoo.Choi: /* Contributions */

2015-10-06T10:36:43Z

Contributions

← Older revision		Revision as of 10:36, 6 October 2015
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	==Contributions==		==Contributions==
	# [[Carrier screening and transport in novel chiral 3D Dirac materials]]		# [[Carrier screening and transport in novel chiral 3D Dirac materials]]
	~~#* Date: Wednesday October 14, 2015 16:00~~
	~~#* Place: Jeongho Seminar Room~~
	#* Abstract: Following the very extensive research activity in graphene over the last ten years, a great deal of interest in condensed matter physics has focused on other 2D and 3D Dirac materials where the elementary low energy noninteracting electronic energy dispersion is linear. We introduce the new 3D Dirac materials and present the density and temperature-dependent carrier conductivity in chiral 3D Dirac materials focusing on resistive scattering from screened Coulomb disorder due to random charged impurities. The scaling properties describing how the conductivity depends on the density and temperature can be used to establish the Dirac nature of 3D systems through transport measurements. We also theoretically calculate and compare the single-particle relaxation time \tau_s, defining the quantum level broadening, and the transport scattering time \tau_t, defining the conductivity, in the presence of screened charged impurity scattering. Finally, we present the dependence of the conductivity on carrier density and temperature for arbitrary chiral band dispersion in arbitrary dimensionality. We establish that the temperature and the density dependence of the conductivity manifests scaling behaviors determining, respectively, the intrinsic semimetallic or the extrinsic metallic property of the gapless system.

Mahnsoo.Choi: /* Contributions */

2015-10-06T10:32:14Z

Contributions

← Older revision		Revision as of 10:32, 6 October 2015
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	==Contributions==		==Contributions==
	# Carrier screening and transport in novel chiral 3D Dirac materials		# [[Carrier screening and transport in novel chiral 3D Dirac materials]]
	#* Date: Wednesday October 14, 2015 16:00		#* Date: Wednesday October 14, 2015 16:00
	#* Place: Jeongho Seminar Room		#* Place: Jeongho Seminar Room
	#* Abstract: Following the very extensive research activity in graphene over the last ten years, a great deal of interest in condensed matter physics has focused on other 2D and 3D Dirac materials where the elementary low energy noninteracting electronic energy dispersion is linear. We introduce the new 3D Dirac materials and present the density and temperature-dependent carrier conductivity in chiral 3D Dirac materials focusing on resistive scattering from screened Coulomb disorder due to random charged impurities. The scaling properties describing how the conductivity depends on the density and temperature can be used to establish the Dirac nature of 3D systems through transport measurements. We also theoretically calculate and compare the single-particle relaxation time \tau_s, defining the quantum level broadening, and the transport scattering time \tau_t, defining the conductivity, in the presence of screened charged impurity scattering. Finally, we present the dependence of the conductivity on carrier density and temperature for arbitrary chiral band dispersion in arbitrary dimensionality. We establish that the temperature and the density dependence of the conductivity manifests scaling behaviors determining, respectively, the intrinsic semimetallic or the extrinsic metallic property of the gapless system.		#* Abstract: Following the very extensive research activity in graphene over the last ten years, a great deal of interest in condensed matter physics has focused on other 2D and 3D Dirac materials where the elementary low energy noninteracting electronic energy dispersion is linear. We introduce the new 3D Dirac materials and present the density and temperature-dependent carrier conductivity in chiral 3D Dirac materials focusing on resistive scattering from screened Coulomb disorder due to random charged impurities. The scaling properties describing how the conductivity depends on the density and temperature can be used to establish the Dirac nature of 3D systems through transport measurements. We also theoretically calculate and compare the single-particle relaxation time \tau_s, defining the quantum level broadening, and the transport scattering time \tau_t, defining the conductivity, in the presence of screened charged impurity scattering. Finally, we present the dependence of the conductivity on carrier density and temperature for arbitrary chiral band dispersion in arbitrary dimensionality. We establish that the temperature and the density dependence of the conductivity manifests scaling behaviors determining, respectively, the intrinsic semimetallic or the extrinsic metallic property of the gapless system.

Mahnsoo.Choi at 00:25, 6 October 2015

2015-10-06T00:25:09Z

← Older revision		Revision as of 00:25, 6 October 2015
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	* SKKU Advanced Institute of Nanotechnology		* SKKU Advanced Institute of Nanotechnology
	* Department of Physics, Sungkyungkwan University		* Department of Physics, Sungkyungkwan University
			[[Category:Speakers]]

	~~[[Category:Speakers]]~~
	==Contributions==		==Contributions==
	# Carrier screening and transport in novel chiral 3D Dirac materials		# Carrier screening and transport in novel chiral 3D Dirac materials

Mahnsoo.Choi at 00:24, 6 October 2015

2015-10-06T00:24:50Z

← Older revision		Revision as of 00:24, 6 October 2015
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	* Department of Physics, Sungkyungkwan University		* Department of Physics, Sungkyungkwan University

			[[Category:Speakers]]
	==Contributions==		==Contributions==
	# Carrier screening and transport in novel chiral 3D Dirac materials		# Carrier screening and transport in novel chiral 3D Dirac materials

Mahnsoo.Choi: Created page with "* Professor * SKKU Advanced Institute of Nanotechnology * Department of Physics, Sungkyungkwan University ==Contributions== # Carrier screening and transport in novel chiral..."

2015-10-06T00:24:12Z

Created page with "* Professor * SKKU Advanced Institute of Nanotechnology * Department of Physics, Sungkyungkwan University ==Contributions== # Carrier screening and transport in novel chiral..."

New page

* Professor
* SKKU Advanced Institute of Nanotechnology
* Department of Physics, Sungkyungkwan University

==Contributions==
# Carrier screening and transport in novel chiral 3D Dirac materials
#* Date: Wednesday October 14, 2015 16:00
#* Place: Jeongho Seminar Room
#* Abstract: Following the very extensive research activity in graphene over the last ten years, a great deal of interest in condensed matter physics has focused on other 2D and 3D Dirac materials where the elementary low energy noninteracting electronic energy dispersion is linear. We introduce the new 3D Dirac materials and present the density and temperature-dependent carrier conductivity in chiral 3D Dirac materials focusing on resistive scattering from screened Coulomb disorder due to random charged impurities. The scaling properties describing how the conductivity depends on the density and temperature can be used to establish the Dirac nature of 3D systems through transport measurements. We also theoretically calculate and compare the single-particle relaxation time \tau_s, defining the quantum level broadening, and the transport scattering time \tau_t, defining the conductivity, in the presence of screened charged impurity scattering. Finally, we present the dependence of the conductivity on carrier density and temperature for arbitrary chiral band dispersion in arbitrary dimensionality. We establish that the temperature and the density dependence of the conductivity manifests scaling behaviors determining, respectively, the intrinsic semimetallic or the extrinsic metallic property of the gapless system.